105. Hermann JS, Cochran DL, Schenk RK. Biologic width around titanium implants-A physiologically formed and stable
dimension over time Clin Oral Implant Res 2000;11:1-11.
Based on these theories, it was suggested that as long as the soft tissue
covering the implant remains closed (sealed) during healing, crestal bone
remodeling does not occur and the crestal height is maintained at the pre-surg
ical levels. On second surgical exposure or the implant getting prematurely
exposed, the crestal bone begins the remodeling to approximately lie at the
first thread 1.5-2 mm apical to the IAJ. The one-stage surgical technique
exposes the IAJ to the oral environment following the implant placement and
abutment connection, and hence the bone remodeling begins immediately.
Biologic width formation takes place since the time of placement of the
implants.